An analysis of option pricing under systematic consumption risk using GARCH

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An issue in the pricing of contingent claims is whether to account for consumption risk. This is relevant for contingent claims on stock indices, such as the FTSE 100 share price index, as investor's desire for smooth consumption is often used to explain risk premiums on stock market portfolios, but is not used to explain risk premiums on contingent claims themselves. This paper addresses this fundamental question by allowing for consumption in an economy to be correlated with returns. Daily data on the FTSE 100 share price index are used to compare three option pricing models: the Black-Scholes option pricing model, a GARCH (1, 1) model priced under a risk-neutral framework, and aGARCH(1, 1) model priced under systematic consumption risk. The findings are that accounting for systematic consumption risk only provides improved accuracy for in-the-money call options. When the correlation between consumption and returns increases, the model that accounts for consumption risk will produce lower call option prices than observed prices for in-the-money call options. These results combined imply that the potential consumption-related premium in the market for contingent claims is constant in the case of FTSE 100 index options.
GARCH , Consumption , Option pricing
Georgievski, Alex & Mohammed Masih, Abul Mansur. (2004). An analysis of option pricing under systematic consumption risk using GARCH. Research in International Business and Finance, 18, pp. 151-171.
Elsevier B.V.

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